The Common Toad is one of Europe’s most widespread amphibians, recognizable by its warty, mottled brown skin and golden eyes with horizontal slit pupils. Unlike frogs, toads have dry, granular skin packed with parotoid glands behind the eyes that secrete a potent toxic alkaloid — bufadienolide — as a defense against predators. Each spring, toads undertake remarkable mass migrations back to their natal ponds, crossing roads in their thousands and inspiring ‘Toads on Roads’ conservation volunteer efforts across Europe.
About the Toad
Bufo bufo
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Common toads can live up to 40 years — exceptional longevity for such a small amphibian — with the confirmed record being a captive toad in Denmark that lived 36 years.
Toads use binocular vision and must perceive prey movement to trigger the strike reflex — a stationary insect in front of a toad is invisible to it behaviorally.
The parotoid glands behind their eyes produce bufadienolide toxins chemically similar to digitalis (a cardiac glycoside), causing heart arrhythmia in predators that mouth them.
Male toads cannot roar; during the breeding season they emit a soft, high-pitched 'release call' if mistakenly clasped by another male, which immediately causes the would-be amplexus partner to let go.
Toads navigate back to their birth pond using olfactory memory, geomagnetic cues, and remembered visual landmarks — migrations that can exceed 5 km each spring.
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